IWF vs VTIAX: 0% overlap
iShares Russell 1000 Growth ETF and Vanguard Total International Stock Index Admiral share 0.4% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
You would hold two tickers and get the diversification of 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IWF and VTIAX hold 26 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IWF | in VTIAX | Δ |
|---|---|---|---|
| CASH | 0.1% | 2.4% | 2.3% |
| HEI-A | 0.1% | 0.0% | 0.0% |
| HEI | 0.0% | 0.1% | 0.0% |
| QSR | 0.0% | 0.1% | 0.0% |
| BAM | 0.1% | 0.0% | 0.0% |
| AAL | 0.0% | 0.1% | 0.1% |
| H | 0.0% | 0.0% | 0.0% |
| MTN | 0.0% | 0.1% | 0.0% |
| ADP | 0.1% | 0.0% | 0.1% |
| EL | 0.0% | 0.1% | 0.1% |
Where IWF and VTIAX differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | IWF | VTIAX | Δ |
|---|---|---|---|
| Information Technology | 55.0% | 20.9% | +34.1pp |
| Financials | 4.7% | 19.7% | −15.0pp |
| Communication Services | 15.7% | 3.3% | +12.4pp |
| Unclassified | 0.0% | 9.1% | −9.1pp |
| Industrials | 8.5% | 13.8% | −5.3pp |
| Materials | 0.3% | 5.2% | −4.9pp |
| Consumer Staples | 1.3% | 4.9% | −3.5pp |
| Utilities | 0.3% | 3.0% | −2.7pp |
Δ is IWF minus VTIAX, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
97.6% of IWF by weight, held in no part of VTIAX.
96.9% of VTIAX by weight, held in no part of IWF.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IWF | VTIAX | |
|---|---|---|
| Top 10 holdings | 56.1% | 16.3% |
| Positions held | 370 | 8,453 |
| Cost per $10,000 held, per year | $19 | $9 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do IWF and VTIAX overlap?
IWF and VTIAX overlap 0.4% by portfolio weight — largely distinct portfolios. They share 26 holdings. The figure comes from current issuer holdings files (IWF as of 2026-07-23, VTIAX as of 2026-06-30).
How is the overlap between IWF and VTIAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IWF holds a stock at 6% and VTIAX holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both IWF and VTIAX?
That depends on your goals — we state facts, not advice. At 0.4% overlap, each fund still contributes meaningfully distinct exposure.
What does IWF own that VTIAX doesn't?
IWF holds 370 positions and VTIAX holds 8,453; 343 of IWF's positions don't appear in VTIAX at all, and they are 97.6% of IWF by weight.
You probably hold more than two funds
This page compares IWF and VTIAX. Paste your whole portfolio — brokerage, 401(k), IRA — and see the overlap across every fund at once, plus what you actually own underneath them and your own Effective Funds number. Free, no account, nothing stored.
X-ray my portfolio — free →Watch IWF vs VTIAX
We re-read both funds’ published holdings every weeknight. Leave an address and we'll tell you when what's inside actually changes.
Not sending yet — email alerts are built but switched off, and you'll be among the first when they turn on. No spam, one-click unsubscribe.
Related comparisons
Sources: issuer holdings files, IWF as of 2026-07-23, VTIAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.